1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
steposvetlana [31]
3 years ago
7

A box contains 35 coins either nickels or dimes all worth $2.90. How many dimes are in the box?

Mathematics
1 answer:
tino4ka555 [31]3 years ago
3 0

Answer:

There are 23 dimes in the box

Step-by-step explanation:

Let nickels=n

Let dimes=(35-n)

Equation: 0.05n+0.10(35-n)=2.90

Multiply both sides by 100: 5n+10(35-n)=290

-5n+350=290

-5n=-60

n=12

35-12=23

Therefore, there are 23 dimes in the box

You might be interested in
If a² + b² = z and ab = y, which of the following is equivalent to 4z + 8y? Show all the steps.
Ivenika [448]

Answer:

The answer to your question is:       (2a + 2b)²

Step-by-step explanation:

a² + b² = z

ab = y

Which is equivalent to 4z + 8y ?

Substitution

                                     4(a² + b²) + 8(ab)

Simplify                        4a² + 4b² + 8ab

Order                            4a² + 8ab + 4b²       It's a perfect square trynomial

Factorize                     (2a + 2b)²

7 0
3 years ago
Read 2 more answers
Subtract. 99.28 8.87​
Yuliya22 [10]
99.28 - 8.87 = 90.41
5 0
3 years ago
Read 2 more answers
Which part of figure A is misleading ?
Marta_Voda [28]

Answer:

2

Step-by-step explanation:

It looks like figure A shows lower scores since it doesn't start at 0

7 0
2 years ago
A rectangular photograph is surrounded by a border that is 1 inch wide on each side. The total area of the photograph and the bo
My name is Ann [436]

if 1 inch is added, you would add 2 inches to to each side of rectangle.  

You would have: W+2, and, L+2,  

Now let W+2 = x and, L+2 = y  

Total area =  x*y=M  

If 1 inch is added again, like above you add 2 inches to both sides, you would then have:

(x+2)(y+2)=M+52;  

xy+2x+2y+4=M+52;  

xy=M

2x+2y=48  

x+y=48/2=24  

Now solve :

W+2+ L+2=24  

W+L=20  

The perimeter is 2(W+L)=20*2 = 40 inches.

6 0
3 years ago
Can somebody help me with 1 Nd 2
Liula [17]

Answer:

1(A)X=3/12

=1/4

1(B)X=14-10

=4

1(C)X=24/6

=4

1(D)X=8+4

=12

2 NO

=He got that answer by dividing $40 by 8

Step-by-step explanation:

Hope it helps u!!

5 0
3 years ago
Other questions:
  • Divide the polynomials (x^3-x^2-11x+15)/(x-3)
    15·1 answer
  • Whats the gcf of 44c^3,22c^3 and 11c^4
    11·2 answers
  • I need help solving number 7
    9·2 answers
  • Abigail's and gina's ages are consecutive integers. abigail is younger than gina and gina's age is represented by x. if the diff
    14·1 answer
  • A herd of 25 horses has 5 white and some horses.What is the ratio of black horses to all horses?
    11·2 answers
  • Does (-8,-8) make the equation y = x true
    7·2 answers
  • The high for Sunday was 2° F and the low was -3° F. What is the difference between the high and low temperature?
    5·1 answer
  • 29% of a university's freshman class are majoring in Economics. If 870 students in the freshman class are Economics majors, how
    10·1 answer
  • ethan is saving money in his piggery bank for his upcoming trip to disney world. on the first day me put 10$ and plans to add 5
    10·1 answer
  • Round to the nearest thousand. Use the number line to model your thinking. 32,879
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!